Solved

Followup Q for shekerra

Posted on 2002-05-30
4
95 Views
Last Modified: 2010-04-13
Does a T-tail (such as on a Citation) have a noticeable effect on elevator authority in an accelerated stall?
0
Comment
Question by:cookre
  • 2
  • 2
4 Comments
 
LVL 16

Accepted Solution

by:
GUEEN earned 100 total points
ID: 7045697
The elevator (at low speeds) tends to ride in a burble of air behind the main wing creating a rough ride.  Early t-tails used to suffer from a condition known as "deep stall" where the main wing was stalled due to high angle of attack, and the t-tail was in the turbulent air behind the main wing.  Because the air was turbulent, the elevator
could not provide the control power necessary to kick the nose down for stall recovery.  Because the wing was stalled, the ailerons would not work, either, to allow a roll recovery.  The aircraft would descend,stable in the stall, right into the ground.  Needless to say, it would
spoil the day for everyone on board.

Later changes to the certification standards required systems to prevent the condition (stall warning, stick pushers and the like), sufficient engine power available in the stalled condition to push the aircraft out
of a stall (increased forward speed will reduce effective angle of attack), and that the inner wing stall before the outer wing, leaving the aileron portion unstalled later into the deep-stall condition.
0
 
LVL 22

Author Comment

by:cookre
ID: 7045855

In answer to your question in that other thread, yes, you now qualify.
0
 
LVL 16

Expert Comment

by:GUEEN
ID: 7046052
LOL thanx cookre :)
0
 
LVL 22

Author Comment

by:cookre
ID: 7050215
Addition commentary in the original thread:
http://www.experts-exchange.com/jsp/qManageQuestion.jsp?qid=20305509
0

Featured Post

Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
Google always has something new and amazing up its sleeve, and the most current thing that they have been working on is another step in the evolution of Google Search, from machine learning to its brilliant successor, deep learning.
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question